| 来源类型 | Article |
| 规范类型 | 其他 |
| DOI | 10.1093/treephys/tpu111 |
| How eco-evolutionary principles can guide tree breeding and tree biotechnology for enhanced productivity. | |
| Franklin O; Palmroth S; Nasholm T | |
| 发表日期 | 2014 |
| 出处 | Tree Physiology 34 (11): 1149-1166 |
| 出版年 | 2014 |
| 语种 | 英语 |
| 摘要 | Tree breeding and biotechnology can enhance forest productivity and help alleviate the rising pressure on forests from climate change and human exploitation. While many physiological processes and genes are targeted in search of genetically improved tree productivity, an overarching principle to guide this search is missing. Here, we propose a method to identify the traits that can be modified to enhance productivity, based on the differences between trees shaped by natural selection and 'improved' trees with traits optimized for productivity. We developed a tractable model of plant growth and survival to explore such potential modifications under a range of environmental conditions, from non-water limited to severely drought-limited sites. We show how key traits are controlled by a trade-off between productivity and survival, and that productivity can be increased at the expense of long-term survival by reducing isohydric behavior (stomatal regulation of leaf water potential) and allocation to defense against pests compared with native trees. In contrast, at dry sites occupied by naturally drought-resistant trees, the model suggests a better strategy may be to select trees with slightly lower wood density than the native trees and to augment isohydric behavior and allocation to defense. Thus, which traits to modify, and in which direction, depend on the original tree species or genotype, the growth environment and wood-quality versus volume production preferences. In contrast to this need for customization of drought and pest resistances, consistent large gains in productivity for all genotypes can be obtained if root traits can be altered to reduce competition for water and nutrients. Our approach illustrates the potential of using eco-evolutionary theory and modeling to guide plant breeding and genetic technology in selecting target traits in the quest for higher forest productivity. |
| 主题 | Ecosystems Services and Management (ESM) |
| 关键词 | adaptation anisohydric aridity climate ecology evolution forestry functional traits genetic modification gmo hydraulics life history mathematical model mortality risk management selection strategy transpiration wood |
| URL | http://pure.iiasa.ac.at/id/eprint/10783/ |
| 来源智库 | International Institute for Applied Systems Analysis (Austria) |
| 引用统计 | |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/129950 |
| 推荐引用方式 GB/T 7714 | Franklin O,Palmroth S,Nasholm T. How eco-evolutionary principles can guide tree breeding and tree biotechnology for enhanced productivity.. 2014. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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